My name is Yohannes Mariam. I received my Bachelor of Science (B.Sc.) and Masters of Science (M.Sc.) degrees in agricultural economics and economics, and Ph.D. degree in economics and agricultural economics, minoring in econometrics or statistics, from McGill University, Montreal (Canada). After completing my doctoral degree requirement in economics and agricultural economics, I took graduate training in anthropology and applied cognitive psychology. I also received certificate in project planning and programming from the Food and Agriculture Organization of the United Nations, and in research management from the University of Manitoba (Canada). After completing my graduate studies, I worked as a fellow of the Natural Sciences and Engineering Research Council (Canada) conducting research in the field of environment. I worked as a consultant and staff for the Canadian Federal Department for the Environment for about six years. Presently I work as a senior economist for the Office of the People's Counsel for the District of Columbia. I have taught statistics for economists, biometry (bio-statics), econometrics, microeconomics, macroeconomics, environmental economics and anthropology (on ground classes). I have also taught general economics, microeconomics, macroeconomics, communications, quantitative methods and research methods course to online students for the past five years. I have written extensively in several aspects of economics and environment.